Not sure if this will help you at all, likely not as I have no clue what this style of pottery is called in China. But in Japan that sort of effect is called Nerikome, and is created by wedging/ layering/ mixing together several different colored clay bodies, that still behave well enough together to be fired together.

AdamMY wrote:Not sure if this will help you at all, likely not as I have no clue what this style of pottery is called in China. But in Japan that sort of effect is called Nerikome, and is created by wedging/ layering/ mixing together several different colored clay bodies, that still behave well enough together to be fired together.

Yup. Agateware in the US- normally one cuts through it to expose multiple layers, like looking into a hole dug into geological strata. Most people add a colorant (metal oxide) to a clay, then mix it with uncolored clay so that they 2 clays are very similar.

I do a fair bit of this, but normally use porcelain and stoneware together so that they flash differently in the wood fire. This requires some mixing, but not too much. If it's not mixed enough then the thicker layers of porcelain crack (mostly minor S cracks in the bottom- but still unacceptable). Too much, and you lose the effect. It took a few tests to make that work well.